Lexus GS 300 3rd generation was produced in 2005, 2006, 2007, 2008, 2009, 2010, 2011 with designations S190 with different engine displacements Lexus GS 350, Lexus GS 430 and Lexus GS 460. In this publication we will show the location of all electronic control units, a detailed description of fuses and relays Lexus GS 3rd generation with fuse box diagrams and photo examples of their performance. Let’s highlight the fuse responsible for the cigarette lighter.
The layout of the units and their function may differ from that shown and depends on the year of manufacture, the level of electrical equipment and the region of delivery of your vehicle.
Contents
Passenger compartment
Location
Layout
Description
- Body electronics control unit (LH)
- Fuse box (LH)
- Distance control module
- Emergency warning and direction indicator relay
- Tyre pressure monitoring system control unit
- Immobiliser control unit
- Distribution unit
- Distribution unit
- Camera controller
- Parktronic Control Unit
- Power Source Control ECU
- Gateway ECU (Gateway ECU)
- Body Electronics Control Unit (RH)
- Fuse Box (RH)
- Absorber control unit
- Distribution Connector
- Steering Control Unit
- Airbag control unit
- Transmission selector lock control unit
- Air conditioner booster
- Steering lock control unit
- Steering column control unit
- Outer Mirror Control Unit (Outer Mirror)
- Distribution Connector
- Headlight Corrector Control Unit
Fuse box on the left side
On the left-hand side, the fuse box is located under the instrument panel.
Check the information with your schematics on the back of the block cover.
Diagram
Assignment
1 | 30A FR P/SEAT LH – Electric front left seat drive |
2 | 7.5A A/C – Air conditioning |
3 | – |
4 | 7.5A TV – Audio system, air conditioning, reversing camera |
5 | – |
6 | 10A TRK OPN – Trunk latch actuator |
7 | 10A LH-B – Anti-theft system |
8 | – |
9 | 25A S/ROOF – Sunroof. |
10 | – |
11 | – |
12 | 7.5A PANEL – Steering wheel button illumination, audio system, glove box illumination, gear selector illumination, armrest illumination, cigarette lighter illumination, adaptive suspension switch illumination, air conditioning, VSC off switch illumination, seat heating and ventilation switch illumination |
13 | 10A FUEL OPEN – Fuel filler flap actuator, boot latch actuator |
14 | 10A ECU-IG LH – VSC, ECB, cruise control, dynamic cruise control, G-sensor, yaw sensor, EPS, VGRS, reversing camera, four-wheel drive, sunroof, rain sensor, front controller |
15 | – |
16 | 15A FR S/HTR LH – Heated and ventilated front left seat |
17 | 20A RR DOOR LH – Rear left door control unit (lock, light, window lift) |
18 | 20A FR DOOR LH – Front left door control unit (lock, power mirror, illumination, mirror heating, window lift) |
19 | 10A RAD NO.3 – Audio system |
20 | – |
21 | 7.5A H-LP LVL – AFS, automatic headlight corrector |
22 | 10A LH-IG – Charging system, headlight washers, rear window heater, exhaust sensor, cooling fan, rear left door control unit, front left door control unit, emergency warning and turn signal relay, automatic transmission, seatbelt pretensioner, parking assist system |
23 | – |
24 | 30A FR WIP – Wiper and washer system |
Fuse box on the right side
There is a second fuse box on the right side under the instrument panel.
Photo – example
Diagram
Allocation
1 | 30A FR P/SEAT RH – Electric front right seat actuator |
2 | – |
3 | 7.5A ODB – Diagnostic connector |
4 | 7.5A STOP SW – Stop lamp, multi-point fuel injection system/sequential multi-point fuel injection system, ignition system, ECB, VSC , gear selector locking |
5 | 7.5A AM1 |
6 | 20A TI & TE – Steering column tilt and height adjustment system, multiplex system |
7 | – |
8 | 7.5A SECURITY – Keyless entry system with push button start. |
9 | 25A STR LOCK – Steering wheel lock |
10 | 7.5A GAUGE – Instrument cluster |
11 | 10A IGN – Multi-point fuel injection system / sequential multi-point fuel injection system, airbags, brake light bulbs/ tail light, steering wheel lock, ECB, Lexus Link system, passenger classification system |
12 | 7.5A ACC – Multiplex system, keyless entry system with push button start, reversing camera, audio system, air conditioning, Lexus Link system |
13 | – |
14 | 15A CIG – Cigarette Lighter |
15 | 15A PWR OUTLET – Power outlet |
16 | 20A AIR SUS – Air suspension. |
17 | Right rear door control unit (lock, light, window lift) |
18 | 20A RR DOOR RH – Front right-hand door control unit (lock, power mirror, light, heated mirror, window lift), multiplex system |
19 | 15A AM2 – Starting system |
20 | 7.5A RH-IG – Heated seats, rear right door control unit, front right door control unit, seat belt pretensioner, parking assist, condenser, light switch (paddle switch) |
21 | 15A FR S/HTR RH – Heated and ventilated front right seat |
22 | 10A ECU-IG RH – Steering column tilt and height adjustment, multiplex system, keyless entry with push button start, audio system, air conditioning, transmission selector lock, tyre pressure monitoring system, light switch (steering wheel switch), front stabiliser, rear stabiliser, DC/DC converter |
23 | – |
24 | – |
Engine compartment
Location
General layout
Appointment
- Fuse and relay box No. 1
- Engine control unit
- Headlight washer relay
- Engine cooling fan control unit
- Injector control unit (EDU)
- Relay Box No. 1
- Fuse and Relay Unit No. 2
- Power steering control unit
- 3UZ-FE: Relay Box No. 2
- 3GR-FSE, 3GR-FE: Relay Unit No. 2
- 3GR-FSE, 3GR-FE: Stability Control Unit
- 3UZ-FE: Stability Control Unit
Fuse and relay box No. 1
Photo – block
Diagram
Decoding
1 | 10A IG2 – Cooling system fan |
2 | 10A EFI NO.2 – Fuel system, exhaust system, multi-point fuel injection system/sequential multi-point fuel injection system, fuel vapour recovery system leak detection pump |
3 | 15A H-LP R LWR – Near right-hand light |
4 | 15A H-LP L LWR – Low beam left light |
5 | 30A H-LP CLN – Headlamp washers |
6 | 30A STB-AM – DC/DC converter |
7 | 7.5A A/C COMP – Air conditioner |
8 | 25A DEICER – Wiper blade parking area heating |
9 | 30A FR CTRL-AM – Front fog light, parking light, windscreen washer |
10 | 25A FR CTRL-B – High beam, audible warning light |
11 | 15A A/F – Air/Fuel Ratio Sensor |
12 | 10A ETCS – Throttle valve |
13 | 7.5A ALT-S – Charging system |
14 | 25A INJ2 – 1UR-FE (GS460): Multipoint fuel injection system/sequential multipoint fuel injection system |
15 | – |
16 | – |
17 | – |
18 | – |
19 | 15A H-LP UPR – High beam |
20 | 10A HORN – Horn |
21 | 20A WASHER – Windscreen washer |
22 | 10A FR TAIL – Front position light |
23 | 15A FR FOG – Front fog light |
24 | – |
25 | 25A F/PMP – Fuel pump |
26 | 20A EFI – 3UZ-FE (GS430), 1UZ-FE (GS460): Multipoint fuel injection system/sequential multipoint fuel injection system |
25A EFI – 3GR-FSE, 3GR-FE (GS300): Multipoint fuel injection system/sequential multipoint fuel injection system | |
27 | 20A INJ – Multipoint fuel injection system/sequential multipoint fuel injection system |
Relay | |
R1 | Air conditioner compressor clutch (A/C COMP) |
R2 | Ignition (IG 2) |
R3 | Air/Fuel Ratio Sensor (A/F) |
R4 | – |
R5 | – |
R6 | Starter (ST CUT) |
R7 | Fuel pump (F/PMP) |
R8 | – |
R9 | – |
R10 | – |
Fuse and relay box No. 2
Diagram
Assignment
1 | 10A ECU-B – VGRS, EPS, driver’s seat control unit, Lexus Link system |
2 | 10A ABS MAIN3 – ECB |
3 | 15A TURN-HAZ – Emergency signalling and direction indicators |
4 | 20A IG2 MAIN – Fuses: ‘IG2’, ‘GAUGE’, ‘IGN’ |
5 | 30A RAD NO.2 – Audio system |
6 | 20A D/C CUT – Fuses: ‘DOME’, ‘MPX-B’ |
7 | 30A RAD NO.1 – Audio system |
8 | 10A MPX-B – Multiplex system, front controller, door control system (central locking, power windows, power mirrors, heated mirrors), power seats, steering sensors, steering column tilt and height adjustment system, light switch (paddle switch), instrument cluster |
9 | 10A DOME – Interior lighting, footwell lighting, illuminated mirrors in sun visors, instrument cluster, gear selector illumination, steering spot light |
10 | 10A CDS – Interference cancellation filter |
11 | 10A ABS MAIN2 – ECB |
12 | 30A ABS MOTOR – ABS |
13 | 10A ABS MAIN1 – ABS, capacitor |
14 | – |
15 | 60A E/G-B – Fuses: ‘FR CTRL BATT’, ‘ECTS’, ‘ALT-S’ |
16 | – |
17 | 50A ABS1 – VSC, fuses: ‘ABS MAIN1’, ‘ABS MAIN2’, ‘ABS MTR’ |
18 | 30A RH J/B-B – Fuses: ‘AM2’, ‘DOOR FR’, ‘DOOR RR’ |
19 | 40A VGRS |
20 | 30A MAIN – Fuses: ‘H-LP R LWR’, ‘H-LP L LWR’ |
21 | 30A STARTER – Starting system |
22 | 30A LH J/B-B – Fuses: ‘FL DOOR’, ‘RL DOOR’, ‘RND NO.3’ |
23 | 60A P/I-B – Multipoint fuel injection system/sequential multipoint fuel injection system |
24 | 80A EPS – Electric Power Steering (EPS) |
25 | – |
26 | 150A ALT – Fuses: ‘RH J/B-AM’, ‘LH J/B-AM’, ‘LH J/B-AM’, ‘E/G-AM’, ‘RR JB’, ‘HEATER’, ‘DEFOG’, ‘FAN1’, ‘FAN2’, ‘ABS2’, ‘ABS MOTOR’, ‘ABS MAIN1’, ‘ABS MAIN2’ |
27 | 80A RR J/B – Fuses: ‘STOP LP R’, ‘STOP LP L’, ‘RR-B’, ‘RR TAIL’, ‘RR FOG’, ‘RR-IG1’, ‘PSB’, ‘RR S/SHADE’ |
28 | 50A GLW PLG1 – Glow plugs. |
29 | 80A RH J/B-AM – Fuses: ‘AM1’, ‘OBD’, ‘STOP SW’, ‘TI&TE’, ‘PWR OUTLET’, ‘FR P/SEAT RH’, ‘STR LOCK’, ‘ECU-IG RH’, ‘RH-IG’, ‘ACC’, ‘CIG’, ‘SECURITY’, ‘FR S/HER RH’, ‘AIR SUS’ |
30 | 30A ABS2 – VSC, ABS |
31 | 50A DEFOG – Rear window heater, interference suppression filter |
32 | 40A CDS – Cooling system fan |
33 | 40A FAN1 – Cooling system fan |
34 | 50A HEATER – Heater |
35 | 50A GLW PLG2 – Glow plugs |
36 | 60A E/G-AM – Fuses: ‘H-LMP CLN’, ‘FR CTRL-AM’, ‘A/C COMP’ |
37 | 80A LH J/B-AM – Fuses: ‘S/ROOF’, ‘FR P/SEAT LH’, ‘TV’, ‘FR S/HTR LH’, ‘FR WIP’, ‘H-LP LVL’, ‘LH-IG’, ‘FUEL OPEN’, ‘A/C’, ‘PANEL’, ‘LH-B’ |
38 | 60A FAN2 – Cooling system fans |
Relay | |
R1 | Starter |
R2 | Cooling fan (FAN MAIN) |
R3 | Headlights (HEAD LP) |
R4 | Electric Power Steering (EPS) |
R5 | Rear window heater (DEFOG) |
Relay Box No. 1
Diagram
Designation
- R1
- R2
- R3 – PTC heater (GLW RLY1)
- R4 – PTC heater (GLW RLY2)
Relay Box No. 2
Diagram
Allocation
R1 | 3UZ–FE: ABS (ABS MAIN1) | ||
3GR–FSE, 3GR–FE: ABS (ABS MOTOR1) | |||
R2 | 3UZ–FE: ABS (ABS MAIN2) | ||
R3 | 3UZ–FE: ABS (ABS MOTOR1) | ||
R4 | ABS (ABS MOTOR2) |
Luggage compartment
Location
Layout
Appointment
- Sunroof control unit
- Distribution unit
- Front right door control unit
- Rear right door control unit
- Light sensor
- Electronic key control unit
- Central locking receiver
- Audio amplifier
- Rear curtain relay
- Seat belt control unit
- Fuse box
- Rear left door control unit
- Front left door control unit
Fuse box
- Photo – example of execution
Diagram
Decoding
- 10A RR TAIL – Rear position light, number plate light
- 10A STOP LP R – Additional brake light
- 7.5A STOP LP L – Stop lamp, reversing lamps / 10A Stop lamp, reversing lamps
- 10A RR FOG – Rear Fog Light
- 10A RR-B – Luggage compartment lighting
- 10A RR-IG1 – Seat belts with preventive function, seat belt tensioning system, A/P UNIT, rear curtain
- 10A RR-IG2
- –
- 30A PSB – Seat belts with preventive function
- 7.5A RR S/SHADE – Rear curtain
- –
A further fuse box is fitted separately.
Diagram
Designation
- 50A STB FR – Front stabiliser
- 30A STB RR – Rear stabiliser
- 30A STB DC/DC – DC/DC converter
Anything to add – write in the comments.